gnuplot_scripts: Remove download of data

We do this in python script

gnuplot_scripts/Euro_exchange_rate_to_TRY_-_Turkish_Currency_and_Debt_Crisis_2018.plt

@@ -4,22 +4,6 @@
 # http://www.ecb.int/stats/exchange/eurofxref/html/index.en.html
 
 
-# download and unzip data if not available 
-# code only für Unix-Shells sh, bash, ... 
-# remove or comment out these lines in Windows/MacOS. an load fram source manualy
-#
-# sh: remove file eurofxref-hist.csv if last zip-file is not from today
-! [ -f upload-from-$(date '+%Y-%m-%d').zip ] ||                \
-  remove eurofxref-hist.csv   \
-  -O upload-from-$(date '+%Y-%m-%d').zip
-# sh: get new zip-file from EZB if last zip-file is not from today
-! [ -f upload-from-$(date '+%Y-%m-%d').zip ] ||                \
-  wget http://www.ecb.int/stats/eurofxref/eurofxref-hist.zip   \
-  -O upload-from-$(date '+%Y-%m-%d').zip
-# sh: extract zip-file every time
-! unzip -o upload-from-$(date '+%Y-%m-%d').zip 
-
-
 # Start und Ende ermitteln (z.Zt. nur für Consolenausagabe)
   stats 'eurofxref-hist.csv' every ::1   u (strptime("%Y-%m-%d",strcol(1))) nooutput
   print '     -----Stats-(Timestamp)----'